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AC compressor Help Klaus!! 850

posted by  someone claiming to be Joe S. on  Mon Apr 18 08:12 CST 2005 [RELATED]

Hello,

There is a pressostat located behind the right headlamp that tells the ECM how much pressure is in the system. The one that you jumped (near the firewall) signals the ECC control unit to engage the compressor, but the ECM will not allow it unless the sensor behind the headlamp reads okay also. Your problem may be in this pressostat. The compressor should turn with slight resistance.

I hope this helps...

Joe S. - Volvo Msater Technician

1988 760 Turbo w/273k miles, 1981 242 Turbo w/243k miles.






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